The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 27, 1976
Filed:
Sep. 07, 1973
Applicant:
Inventors:
Orval E Ayers, Huntsville, AL (US);
Hiram W Dykes, Huntsville, AL (US);
Bernard J Alley, Huntsville, AL (US);
Assignee:
The United States of America as represented by the Secretary of the Army, Washington, DC (US);
Primary Examiner:
Int. Cl.
CPC ...
C06B / ;
U.S. Cl.
CPC ...
149-7 ; 149 76 ;
Abstract
A method for preparing aziridine coated ammonium perchlorate (AP) of weight edian diameters (WMD) ranging from about 0.25 to about 5.0 micrometers is disclosed. The method employs either an unlined stainless steel or a polyurethane lined vibro-energy grinding mill wherein a high purity aziridine compound is used as the grinding aid and the coating agent for the AP. The coated AP product extends the pot-life for hydroxyterminated polybutadiene (HTPB) propellant formulations.